Docs: update Mac OSX instructions

Author: xlz

README.md

@@ -99,6 +99,8 @@ You can go back and forth between the SDK driver and the libusbK driver very qui
 brew update
 brew tap homebrew/science
 brew install opencv git nasm wget jpeg-turbo
+brew tap homebrew/versions
+brew install glfw3
 ```
 
 1. Download the libfreenect2 repository
@@ -111,7 +113,6 @@ git clone [email protected]:OpenKinect/libfreenect2.git
 
     ```
 cd ./libfreenect2
-ln -s /usr/local/opt/jpeg-turbo depends/libjpeg_turbo
 sh ./depends/install_mac.sh
 ```